The Siliguri Corridor, commonly known as the Chicken’s Neck, has become a central issue in West Bengal’s political campaign, with the BJP placing strong emphasis on security and infiltration concerns. The corridor, which is around 20–22 kilometres wide, connects mainland India to the Northeast and is bordered by Nepal, Bhutan, and Bangladesh, making it a strategically sensitive region. BJP leaders argue that illegal infiltration from Bangladesh and delays in border fencing have created long-term security challenges in the region. Senior leaders, including Narendra Modi and Amit Shah, have highlighted the corridor as a key national security concern during campaign rallies. The Trinamool Congress has countered these claims, stating that border security falls under the Centre's jurisdiction and is managed by the Border Security Force. The party has accused the BJP of politicising the issue ahead of elections. This explainer breaks down the geography, strategic importance, political narrative, and voter impact of the Chicken’s Neck issue in the West Bengal elections.